A highly asymmetric, Lewis acid-catalysed Diels–Alder reaction using optically active 2-(3-tolyl p-sulfinyl)furyl α,β-unsaturated ketones as a dienophile
作者:Yoshitsugu Arai、Tsutomu Masuda、Yukio Masaki、Motoo Shiro
DOI:10.1039/p19960000759
日期:——
The Diels-Alder reaction of chiral 2-(3-tolyl-p-sulfinyl)furyl alpha,beta-unsaturated ketones 3 and 4 with cyclopentadiene in the presence of a Lewis acid proceeds smoothly to give the corresponding endo adducts 5a and 6a, respectively, in excellent yield with high diastereoselectivity.